Neurology is the branch of medicine concerned with diseases, injuries and conditions of the nervous system. The nervous system consists of the central nervous system (the brain and spinal cord) and the peripheral nervous system (motor and sensory nerves and ganglia outside the brain and spinal cord). The peripheral nervous system connects the rest of the body to the spinal cord and the brain.

A neurologist is a doctor trained to investigate, diagnose or treat disorders of the brain, spinal cord or nerves such as multiple sclerosis, Parkinson’s disease, neuropathy, memory disorders, vertigo, muscular dystrophy and epilepsy. A neurosurgeon is a doctor trained to provide surgical treatment to address disorders of the nervous system, including brain and spine tumors, aneurysms, cerebral fluid disorders and some peripheral nerve conditions.